JEFFREY A JACOBS M.D.
NPI 1518085984
Preventive Medicine - Preventive Medicine/Occupational Environmental Medicine in Orange, CA

NPI Status: Active since March 26, 2007

Contact Information

1100 W TOWN AND COUNTRY RD STE 1300
ORANGE, CA
ZIP 92868
Phone: (856) 745-1151
Fax: (714) 923-3803

NPI Profile Information
Primary Taxonomy
NPI Validation
Other Providers Same Location
Frequently Asked Questions

Individual
Male
Preventive Medicine
Preventive Medicine/Occupational Environ...

About JEFFREY JACOBS

This page provides the complete NPI Profile along with additional information for Jeffrey Jacobs, a provider established in Orange, California with a medical specialization in Preventive Medicine, focusing in preventive medicine/occupational environmental medicine . The healthcare provider is registered in the NPI registry with number 1518085984 assigned on March 2007. The practitioner's primary taxonomy code is 2083P0500X with license number G062853 (CA). The provider is registered as an individual and his NPI record was last updated June 2026.

NPI: 1518085984
Provider Name: JEFFREY A JACOBS M.D.
Gender: Male
Entity Type: Individual
Location Address: 1100 W TOWN AND COUNTRY RD STE 1300 ORANGE, CA 92868
Location Phone: (856) 745-1151
Location Fax: (714) 923-3803
Mailing Address: 1100 W TOWN AND COUNTRY RD STE 1300 ORANGE, CA 92868
Mailing Phone: (856) 745-1151
Mailing Fax: (714) 923-3803
Is Sole Proprietor?: Yes
Enumeration Date: 03-26-2007
Last Update Date: 06-01-2026
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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification: Preventive Medicine Preventive Medicine/Occupational Environmental Medicine
Taxonomy Code: 2083P0500X
Type: Allopathic & Osteopathic Physicians
License No.: G062853
License State: CA
Taxonomy Description: A preventive medicine physician who specializes in preventive medicine/occupational-environmental medicine, which is focused on protecting the population from occupational and environmental conditions.

NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1518085984, we treat the final digit (4) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 66. The final step is to find the difference between that total and the next multiple of ten (70 - 66 = 4).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1

Doubled → 2

Pos 2

Unchanged

Pos 3

Doubled → 2

Pos 4

Unchanged

Pos 5

Doubled → 0

Pos 6

Unchanged

Pos 7

Doubled → 10 → 1 + 0

Pos 8

Unchanged

Pos 9

Doubled → 16 → 1 + 6

Check

Target digit

Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 1 → 2 0 → 0 5 → 10 → 1 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 5 + 2 + 8 + 0 + 8 + 1 + 0 + 9 + 1 + 6 + 24 = 66

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 66 is 70. The difference is the calculated check digit.

70 - 66 = 4

This NPI is valid

The calculated check digit is 4, which matches the last digit of 1518085984.